Themes per Package
## ggplot2::theme_bw()
## ggplot2::theme_classic()
## ggplot2::theme_dark()
## ggplot2::theme_gray()
## ggplot2::theme_grey()
## ggplot2::theme_light()
## ggplot2::theme_linedraw()
## ggplot2::theme_minimal()
## ggplot2::theme_void()
## ggthemes::theme_base()
## ggthemes::theme_calc()
## ggthemes::theme_clean()
## ggthemes::theme_economist()
## ggthemes::theme_economist_white()
## ggthemes::theme_excel()
## ggthemes::theme_excel_new()
## ggthemes::theme_few()
## ggthemes::theme_fivethirtyeight()
## ggthemes::theme_foundation()
## ggthemes::theme_gdocs()
## ggthemes::theme_hc()
## ggthemes::theme_igray()
## ggthemes::theme_map()
## ggthemes::theme_pander()
## ggthemes::theme_par()
## ggthemes::theme_solarized()
## ggthemes::theme_solarized_2()
## ggthemes::theme_solid()
## ggthemes::theme_stata()
## ggthemes::theme_tufte()
## ggthemes::theme_wsj()
## cowplot::theme_cowplot()
## cowplot::theme_half_open()
## cowplot::theme_map()
## cowplot::theme_minimal_grid()
## cowplot::theme_minimal_hgrid()
## cowplot::theme_minimal_vgrid()
## cowplot::theme_nothing()
## hrbrthemes::theme_ft_rc()
## hrbrthemes::theme_ipsum()
## hrbrthemes::theme_ipsum_es()
## hrbrthemes::theme_ipsum_ps()
## hrbrthemes::theme_ipsum_pub()
## hrbrthemes::theme_ipsum_rc()
## hrbrthemes::theme_ipsum_tw()
## hrbrthemes::theme_modern_rc()
## hrbrthemes::theme_tinyhand()
